Red Velvet "pumpkin" Cake

I was going to make a Red Velvet cake shaped like a pumpin to take to work for our Fall party but I was wondering if I could color Cream Cheese Icing Orange and if the Crusting Cream Cheese icing recipies will crust enough to put the indentions in it and if I can use the Viva paper towel method on Cream Cheese icing. Sorry for all the questions I am very new at all this. Thanks for your help!